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Whole recombinant yeast-based vaccines: concept, importance, issues, and future scope.

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Summary

Whole yeast (WY) and whole recombinant yeast-based (WRY) vaccines offer a promising alternative to traditional vaccines. These formulations address issues like temperature sensitivity and cold chain requirements, improving vaccine stability and accessibility.

Keywords:
Vaccineanti-fungalguidelinesstabilitystoragethermolabilewhole recombinant yeast

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Area of Science:

  • Biotechnology
  • Immunology
  • Vaccinology

Background:

  • Current vaccine formulations, including mRNA vaccines, face challenges such as thermal instability, limited shelf life, and stringent cold chain requirements.
  • These limitations hinder vaccine accessibility and efficacy, particularly in resource-limited settings.

Purpose of the Study:

  • To review the advantages of whole yeast (WY) and whole recombinant yeast-based (WRY) vaccines in overcoming common vaccine formulation issues.
  • To discuss the immunomodulatory interactions of yeast cells with the host immune system relevant to WRY vaccines.
  • To highlight the potential of WRY vaccines, especially for anti-fungal applications, and identify developmental bottlenecks.

Main Methods:

  • Literature review of existing research on yeast-based vaccine formulations.
  • Analysis of studies investigating the immunogenicity and stability of WY and WRY vaccines.
  • Examination of clinical trial data and research guidelines for WRY vaccine development.

Main Results:

  • WRY vaccines demonstrate potential for improved thermostability and shelf life compared to conventional vaccines.
  • Yeast cell components can act as intrinsic adjuvants, enhancing immune responses.
  • The review identifies key challenges and provides recommendations for WRY vaccine research and reporting.

Conclusions:

  • Whole yeast and whole recombinant yeast-based vaccines present a viable strategy to enhance vaccine stability and overcome cold chain dependency.
  • Further research and standardized reporting are crucial for advancing WRY vaccine technology, particularly for anti-fungal applications.